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gstreamer/sys/decklink/gstdecklink.cpp

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/* GStreamer
* Copyright (C) 2011 David Schleef <ds@schleef.org>
* Copyright (C) 2014 Sebastian Dröge <sebastian@centricular.com>
* Copyright (C) 2015 Florian Langlois <florian.langlois@fr.thalesgroup.com>
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Library General Public
* License as published by the Free Software Foundation; either
* version 2 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Library General Public License for more details.
*
* You should have received a copy of the GNU Library General Public
* License along with this library; if not, write to the
* Free Software Foundation, Inc., 51 Franklin Street, Suite 500,
* Boston, MA 02110-1335, USA.
*/
#ifdef HAVE_CONFIG_H
#include "config.h"
#endif
#include <gst/gst.h>
#include "gstdecklink.h"
#include "gstdecklinkaudiosink.h"
#include "gstdecklinkvideosink.h"
#include "gstdecklinkaudiosrc.h"
#include "gstdecklinkvideosrc.h"
GST_DEBUG_CATEGORY_STATIC (gst_decklink_debug);
#define GST_CAT_DEFAULT gst_decklink_debug
GType
gst_decklink_mode_get_type (void)
{
static gsize id = 0;
static const GEnumValue modes[] = {
{GST_DECKLINK_MODE_AUTO, "auto", "Automatic detection"},
{GST_DECKLINK_MODE_NTSC, "ntsc", "NTSC SD 60i"},
{GST_DECKLINK_MODE_NTSC2398, "ntsc2398", "NTSC SD 60i (24 fps)"},
{GST_DECKLINK_MODE_PAL, "pal", "PAL SD 50i"},
{GST_DECKLINK_MODE_NTSC_P, "ntsc-p", "NTSC SD 60p"},
{GST_DECKLINK_MODE_PAL_P, "pal-p", "PAL SD 50p"},
{GST_DECKLINK_MODE_1080p2398, "1080p2398", "HD1080 23.98p"},
{GST_DECKLINK_MODE_1080p24, "1080p24", "HD1080 24p"},
{GST_DECKLINK_MODE_1080p25, "1080p25", "HD1080 25p"},
{GST_DECKLINK_MODE_1080p2997, "1080p2997", "HD1080 29.97p"},
{GST_DECKLINK_MODE_1080p30, "1080p30", "HD1080 30p"},
{GST_DECKLINK_MODE_1080i50, "1080i50", "HD1080 50i"},
{GST_DECKLINK_MODE_1080i5994, "1080i5994", "HD1080 59.94i"},
{GST_DECKLINK_MODE_1080i60, "1080i60", "HD1080 60i"},
{GST_DECKLINK_MODE_1080p50, "1080p50", "HD1080 50p"},
{GST_DECKLINK_MODE_1080p5994, "1080p5994", "HD1080 59.94p"},
{GST_DECKLINK_MODE_1080p60, "1080p60", "HD1080 60p"},
{GST_DECKLINK_MODE_720p50, "720p50", "HD720 50p"},
{GST_DECKLINK_MODE_720p5994, "720p5994", "HD720 59.94p"},
{GST_DECKLINK_MODE_720p60, "720p60", "HD720 60p"},
{GST_DECKLINK_MODE_1556p2398, "1556p2398", "2k 23.98p"},
{GST_DECKLINK_MODE_1556p24, "1556p24", "2k 24p"},
{GST_DECKLINK_MODE_1556p25, "1556p25", "2k 25p"},
{GST_DECKLINK_MODE_2160p2398, "2160p2398", "4k 23.98p"},
{GST_DECKLINK_MODE_2160p24, "2160p24", "4k 24p"},
{GST_DECKLINK_MODE_2160p25, "2160p25", "4k 25p"},
{GST_DECKLINK_MODE_2160p2997, "2160p2997", "4k 29.97p"},
{GST_DECKLINK_MODE_2160p30, "2160p30", "4k 30p"},
{GST_DECKLINK_MODE_2160p50, "2160p50", "4k 50p"},
{GST_DECKLINK_MODE_2160p5994, "2160p5994", "4k 59.94p"},
{GST_DECKLINK_MODE_2160p60, "2160p60", "4k 60p"},
{0, NULL, NULL}
};
if (g_once_init_enter (&id)) {
GType tmp = g_enum_register_static ("GstDecklinkModes", modes);
g_once_init_leave (&id, tmp);
}
return (GType) id;
}
GType
gst_decklink_connection_get_type (void)
{
static gsize id = 0;
static const GEnumValue connections[] = {
{GST_DECKLINK_CONNECTION_AUTO, "auto", "Auto"},
{GST_DECKLINK_CONNECTION_SDI, "sdi", "SDI"},
{GST_DECKLINK_CONNECTION_HDMI, "hdmi", "HDMI"},
{GST_DECKLINK_CONNECTION_OPTICAL_SDI, "optical-sdi", "Optical SDI"},
{GST_DECKLINK_CONNECTION_COMPONENT, "component", "Component"},
{GST_DECKLINK_CONNECTION_COMPOSITE, "composite", "Composite"},
{GST_DECKLINK_CONNECTION_SVIDEO, "svideo", "S-Video"},
{0, NULL, NULL}
};
if (g_once_init_enter (&id)) {
GType tmp = g_enum_register_static ("GstDecklinkConnection", connections);
g_once_init_leave (&id, tmp);
}
return (GType) id;
}
GType
gst_decklink_audio_connection_get_type (void)
{
static gsize id = 0;
static const GEnumValue connections[] = {
{GST_DECKLINK_AUDIO_CONNECTION_AUTO, "auto", "Automatic"},
{GST_DECKLINK_AUDIO_CONNECTION_EMBEDDED, "embedded",
"SDI/HDMI embedded audio"},
{GST_DECKLINK_AUDIO_CONNECTION_AES_EBU, "aes", "AES/EBU input"},
{GST_DECKLINK_AUDIO_CONNECTION_ANALOG, "analog", "Analog input"},
{GST_DECKLINK_AUDIO_CONNECTION_ANALOG_XLR, "analog-xlr",
"Analog input (XLR)"},
{GST_DECKLINK_AUDIO_CONNECTION_ANALOG_RCA, "analog-rca",
"Analog input (RCA)"},
{0, NULL, NULL}
};
if (g_once_init_enter (&id)) {
GType tmp =
g_enum_register_static ("GstDecklinkAudioConnection", connections);
g_once_init_leave (&id, tmp);
}
return (GType) id;
}
#define NTSC 10, 11, false, "bt601"
#define PAL 12, 11, true, "bt601"
#define HD 1, 1, false, "bt709"
#define UHD 1, 1, false, "bt2020"
static const GstDecklinkMode modes[] = {
{bmdModeNTSC, 720, 486, 30000, 1001, true, NTSC}, // default is ntsc
{bmdModeNTSC, 720, 486, 30000, 1001, true, NTSC},
{bmdModeNTSC2398, 720, 486, 24000, 1001, true, NTSC},
{bmdModePAL, 720, 576, 25, 1, true, PAL},
{bmdModeNTSCp, 720, 486, 30000, 1001, false, NTSC},
{bmdModePALp, 720, 576, 25, 1, false, PAL},
{bmdModeHD1080p2398, 1920, 1080, 24000, 1001, false, HD},
{bmdModeHD1080p24, 1920, 1080, 24, 1, false, HD},
{bmdModeHD1080p25, 1920, 1080, 25, 1, false, HD},
{bmdModeHD1080p2997, 1920, 1080, 30000, 1001, false, HD},
{bmdModeHD1080p30, 1920, 1080, 30, 1, false, HD},
{bmdModeHD1080i50, 1920, 1080, 25, 1, true, HD},
{bmdModeHD1080i5994, 1920, 1080, 30000, 1001, true, HD},
{bmdModeHD1080i6000, 1920, 1080, 30, 1, true, HD},
{bmdModeHD1080p50, 1920, 1080, 50, 1, false, HD},
{bmdModeHD1080p5994, 1920, 1080, 60000, 1001, false, HD},
{bmdModeHD1080p6000, 1920, 1080, 60, 1, false, HD},
{bmdModeHD720p50, 1280, 720, 50, 1, false, HD},
{bmdModeHD720p5994, 1280, 720, 60000, 1001, false, HD},
{bmdModeHD720p60, 1280, 720, 60, 1, false, HD},
{bmdMode2k2398, 2048, 1556, 24000, 1001, false, HD},
{bmdMode2k24, 2048, 1556, 24, 1, false, HD},
{bmdMode2k25, 2048, 1556, 25, 1, false, HD},
{bmdMode4K2160p2398, 3840, 2160, 24000, 1001, false, UHD},
{bmdMode4K2160p24, 3840, 2160, 24, 1, false, UHD},
{bmdMode4K2160p25, 3840, 2160, 25, 1, false, UHD},
{bmdMode4K2160p2997, 3840, 2160, 30000, 1001, false, UHD},
{bmdMode4K2160p30, 3840, 2160, 30, 1, false, UHD},
{bmdMode4K2160p50, 3840, 2160, 50, 1, false, UHD},
{bmdMode4K2160p5994, 3840, 2160, 60000, 1001, false, UHD},
{bmdMode4K2160p60, 3840, 2160, 60, 1, false, UHD}
};
const GstDecklinkMode *
gst_decklink_get_mode (GstDecklinkModeEnum e)
{
if (e < GST_DECKLINK_MODE_AUTO || e > GST_DECKLINK_MODE_2160p60)
return NULL;
return &modes[e];
}
const GstDecklinkModeEnum
gst_decklink_get_mode_enum_from_bmd (BMDDisplayMode mode)
{
GstDecklinkModeEnum displayMode = GST_DECKLINK_MODE_NTSC;
switch (mode) {
case bmdModeNTSC:
displayMode = GST_DECKLINK_MODE_NTSC;
break;
case bmdModeNTSC2398:
displayMode = GST_DECKLINK_MODE_NTSC2398;
break;
case bmdModePAL:
displayMode = GST_DECKLINK_MODE_PAL;
break;
case bmdModeNTSCp:
displayMode = GST_DECKLINK_MODE_NTSC_P;
break;
case bmdModePALp:
displayMode = GST_DECKLINK_MODE_PAL_P;
break;
case bmdModeHD1080p2398:
displayMode = GST_DECKLINK_MODE_1080p2398;
break;
case bmdModeHD1080p24:
displayMode = GST_DECKLINK_MODE_1080p24;
break;
case bmdModeHD1080p25:
displayMode = GST_DECKLINK_MODE_1080p25;
break;
case bmdModeHD1080p2997:
displayMode = GST_DECKLINK_MODE_1080p2997;
break;
case bmdModeHD1080p30:
displayMode = GST_DECKLINK_MODE_1080p30;
break;
case bmdModeHD1080i50:
displayMode = GST_DECKLINK_MODE_1080i50;
break;
case bmdModeHD1080i5994:
displayMode = GST_DECKLINK_MODE_1080i5994;
break;
case bmdModeHD1080i6000:
displayMode = GST_DECKLINK_MODE_1080i60;
break;
case bmdModeHD1080p50:
displayMode = GST_DECKLINK_MODE_1080p50;
break;
case bmdModeHD1080p5994:
displayMode = GST_DECKLINK_MODE_1080p5994;
break;
case bmdModeHD1080p6000:
displayMode = GST_DECKLINK_MODE_1080p60;
break;
case bmdModeHD720p50:
displayMode = GST_DECKLINK_MODE_720p50;
break;
case bmdModeHD720p5994:
displayMode = GST_DECKLINK_MODE_720p5994;
break;
case bmdModeHD720p60:
displayMode = GST_DECKLINK_MODE_720p60;
break;
case bmdMode2k2398:
displayMode = GST_DECKLINK_MODE_1556p2398;
break;
case bmdMode2k24:
displayMode = GST_DECKLINK_MODE_1556p24;
break;
case bmdMode2k25:
displayMode = GST_DECKLINK_MODE_1556p25;
break;
case bmdMode4K2160p2398:
displayMode = GST_DECKLINK_MODE_2160p2398;
break;
case bmdMode4K2160p24:
displayMode = GST_DECKLINK_MODE_2160p24;
break;
case bmdMode4K2160p25:
displayMode = GST_DECKLINK_MODE_2160p25;
break;
case bmdMode4K2160p2997:
displayMode = GST_DECKLINK_MODE_2160p2997;
break;
case bmdMode4K2160p30:
displayMode = GST_DECKLINK_MODE_2160p30;
break;
case bmdMode4K2160p50:
displayMode = GST_DECKLINK_MODE_2160p50;
break;
case bmdMode4K2160p5994:
displayMode = GST_DECKLINK_MODE_2160p5994;
break;
case bmdMode4K2160p60:
displayMode = GST_DECKLINK_MODE_2160p60;
break;
default:
g_assert_not_reached ();
break;
}
return displayMode;
}
static const BMDVideoConnection connections[] = {
0, /* auto */
bmdVideoConnectionSDI,
bmdVideoConnectionHDMI,
bmdVideoConnectionOpticalSDI,
bmdVideoConnectionComponent,
bmdVideoConnectionComposite,
bmdVideoConnectionSVideo
};
const BMDVideoConnection
gst_decklink_get_connection (GstDecklinkConnectionEnum e)
{
g_return_val_if_fail (e != GST_DECKLINK_CONNECTION_AUTO,
bmdVideoConnectionSDI);
if (e <= GST_DECKLINK_CONNECTION_AUTO || e > GST_DECKLINK_CONNECTION_SVIDEO)
e = GST_DECKLINK_CONNECTION_SDI;
return connections[e];
}
static GstStructure *
gst_decklink_mode_get_structure (GstDecklinkModeEnum e)
{
const GstDecklinkMode *mode = &modes[e];
return gst_structure_new ("video/x-raw",
"format", G_TYPE_STRING, "UYVY",
"width", G_TYPE_INT, mode->width,
"height", G_TYPE_INT, mode->height,
"framerate", GST_TYPE_FRACTION, mode->fps_n, mode->fps_d,
"interlace-mode", G_TYPE_STRING,
mode->interlaced ? "interleaved" : "progressive", "pixel-aspect-ratio",
GST_TYPE_FRACTION, mode->par_n, mode->par_d, "colorimetry", G_TYPE_STRING,
mode->colorimetry, "chroma-site", G_TYPE_STRING, "mpeg2", NULL);
}
GstCaps *
gst_decklink_mode_get_caps (GstDecklinkModeEnum e)
{
GstCaps *caps;
caps = gst_caps_new_empty ();
gst_caps_append_structure (caps, gst_decklink_mode_get_structure (e));
return caps;
}
GstCaps *
gst_decklink_mode_get_template_caps (void)
{
int i;
GstCaps *caps;
GstStructure *s;
caps = gst_caps_new_empty ();
for (i = 1; i < (int) G_N_ELEMENTS (modes); i++) {
s = gst_decklink_mode_get_structure ((GstDecklinkModeEnum) i);
gst_caps_append_structure (caps, s);
}
return caps;
}
#define GST_TYPE_DECKLINK_CLOCK \
(gst_decklink_clock_get_type())
#define GST_DECKLINK_CLOCK(obj) \
(G_TYPE_CHECK_INSTANCE_CAST((obj),GST_TYPE_DECKLINK_CLOCK,GstDecklinkClock))
#define GST_DECKLINK_CLOCK_CLASS(klass) \
(G_TYPE_CHECK_CLASS_CAST((klass),GST_TYPE_DECKLINK_CLOCK,GstDecklinkClockClass))
#define GST_IS_Decklink_CLOCK(obj) \
(G_TYPE_CHECK_INSTANCE_TYPE((obj),GST_TYPE_DECKLINK_CLOCK))
#define GST_IS_Decklink_CLOCK_CLASS(klass) \
(G_TYPE_CHECK_CLASS_TYPE((klass),GST_TYPE_DECKLINK_CLOCK))
#define GST_DECKLINK_CLOCK_CAST(obj) \
((GstDecklinkClock*)(obj))
typedef struct _GstDecklinkClock GstDecklinkClock;
typedef struct _GstDecklinkClockClass GstDecklinkClockClass;
struct _GstDecklinkClock
{
GstSystemClock clock;
GstDecklinkInput *input;
GstDecklinkOutput *output;
};
struct _GstDecklinkClockClass
{
GstSystemClockClass parent_class;
};
GType gst_decklink_clock_get_type (void);
static GstClock *gst_decklink_clock_new (const gchar * name);
typedef struct _Device Device;
struct _Device
{
GstDecklinkOutput output;
GstDecklinkInput input;
};
class GStreamerDecklinkInputCallback:public IDeckLinkInputCallback
{
private:
GstDecklinkInput * m_input;
GMutex m_mutex;
gint m_refcount;
public:
GStreamerDecklinkInputCallback (GstDecklinkInput * input)
: IDeckLinkInputCallback (), m_refcount (1)
{
m_input = input;
g_mutex_init (&m_mutex);
}
virtual ~ GStreamerDecklinkInputCallback ()
{
g_mutex_clear (&m_mutex);
}
virtual HRESULT STDMETHODCALLTYPE QueryInterface (REFIID, LPVOID *)
{
return E_NOINTERFACE;
}
virtual ULONG STDMETHODCALLTYPE AddRef (void)
{
ULONG ret;
g_mutex_lock (&m_mutex);
m_refcount++;
ret = m_refcount;
g_mutex_unlock (&m_mutex);
return ret;
}
virtual ULONG STDMETHODCALLTYPE Release (void)
{
ULONG ret;
g_mutex_lock (&m_mutex);
m_refcount--;
ret = m_refcount;
g_mutex_unlock (&m_mutex);
if (ret == 0) {
delete this;
}
return ret;
}
virtual HRESULT STDMETHODCALLTYPE
VideoInputFormatChanged (BMDVideoInputFormatChangedEvents,
IDeckLinkDisplayMode * mode, BMDDetectedVideoInputFormatFlags)
{
GST_INFO ("Video input format changed");
g_mutex_lock (&m_input->lock);
m_input->input->PauseStreams ();
m_input->input->EnableVideoInput (mode->GetDisplayMode (),
bmdFormat8BitYUV, bmdVideoInputEnableFormatDetection);
m_input->input->FlushStreams ();
m_input->input->StartStreams ();
m_input->mode =
gst_decklink_get_mode (gst_decklink_get_mode_enum_from_bmd
(mode->GetDisplayMode ()));
g_mutex_unlock (&m_input->lock);
return S_OK;
}
virtual HRESULT STDMETHODCALLTYPE
VideoInputFrameArrived (IDeckLinkVideoInputFrame * video_frame,
IDeckLinkAudioInputPacket * audio_packet)
{
GstElement *videosrc = NULL, *audiosrc = NULL;
void (*got_video_frame) (GstElement * videosrc,
IDeckLinkVideoInputFrame * frame, GstDecklinkModeEnum mode,
GstClockTime capture_time, GstClockTime capture_duration) = NULL;
void (*got_audio_packet) (GstElement * videosrc,
IDeckLinkAudioInputPacket * packet, GstClockTime capture_time) = NULL;
GstDecklinkModeEnum mode;
BMDTimeValue capture_time, capture_duration;
HRESULT res;
res =
video_frame->GetHardwareReferenceTimestamp (GST_SECOND, &capture_time,
&capture_duration);
if (res != S_OK) {
GST_ERROR ("Failed to get capture time: 0x%08x", res);
capture_time = GST_CLOCK_TIME_NONE;
capture_duration = GST_CLOCK_TIME_NONE;
}
g_mutex_lock (&m_input->lock);
if (capture_time > (BMDTimeValue) m_input->clock_start_time)
capture_time -= m_input->clock_start_time;
else
capture_time = 0;
if (capture_time > (BMDTimeValue) m_input->clock_offset)
capture_time -= m_input->clock_offset;
else
capture_time = 0;
if (m_input->videosrc) {
videosrc = GST_ELEMENT_CAST (gst_object_ref (m_input->videosrc));
got_video_frame = m_input->got_video_frame;
}
mode = gst_decklink_get_mode_enum_from_bmd (m_input->mode->mode);
if (m_input->audiosrc) {
audiosrc = GST_ELEMENT_CAST (gst_object_ref (m_input->audiosrc));
got_audio_packet = m_input->got_audio_packet;
}
g_mutex_unlock (&m_input->lock);
if (got_video_frame && videosrc) {
got_video_frame (videosrc, video_frame, mode, capture_time,
capture_duration);
}
if (got_audio_packet && audiosrc) {
m_input->got_audio_packet (audiosrc, audio_packet, capture_time);
}
gst_object_replace ((GstObject **) & videosrc, NULL);
gst_object_replace ((GstObject **) & audiosrc, NULL);
return S_OK;
}
};
#ifdef _MSC_VER
/* FIXME: We currently never deinit this */
static GMutex com_init_lock;
static GMutex com_deinit_lock;
static GCond com_init_cond;
static GCond com_deinit_cond;
static GCond com_deinited_cond;
static gboolean com_initialized = FALSE;
/* COM initialization/uninitialization thread */
static gpointer
gst_decklink_com_thread (gpointer data)
{
HRESULT res;
g_mutex_lock (&com_init_lock);
/* Initialize COM with a MTA for this process. This thread will
* be the first one to enter the apartement and the last one to leave
* it, unitializing COM properly */
res = CoInitializeEx (0, COINIT_MULTITHREADED);
if (res == S_FALSE)
GST_WARNING ("COM has been already initialized in the same process");
else if (res == RPC_E_CHANGED_MODE)
GST_WARNING ("The concurrency model of COM has changed.");
else
GST_INFO ("COM intialized succesfully");
com_initialized = TRUE;
/* Signal other threads waiting on this condition that COM was initialized */
g_cond_signal (&com_init_cond);
g_mutex_unlock (&com_init_lock);
/* Wait until the unitialize condition is met to leave the COM apartement */
g_mutex_lock (&com_deinit_lock);
g_cond_wait (&com_deinit_cond, &com_deinit_lock);
CoUninitialize ();
GST_INFO ("COM unintialized succesfully");
com_initialized = FALSE;
g_cond_signal (&com_deinited_cond);
g_mutex_unlock (&com_deinit_lock);
return NULL;
}
#endif /* _MSC_VER */
static GOnce devices_once = G_ONCE_INIT;
static int n_devices;
static Device devices[10];
static gpointer
init_devices (gpointer data)
{
IDeckLinkIterator *iterator;
IDeckLink *decklink = NULL;
HRESULT ret;
int i;
#ifdef _MSC_VER
// Start COM thread for Windows
g_mutex_lock (&com_init_lock);
/* create the COM initialization thread */
g_thread_create ((GThreadFunc) gst_decklink_com_thread, NULL, FALSE, NULL);
/* wait until the COM thread signals that COM has been initialized */
g_cond_wait (&com_init_cond, &com_init_lock);
g_mutex_unlock (&com_init_lock);
#endif /* _MSC_VER */
iterator = CreateDeckLinkIteratorInstance ();
if (iterator == NULL) {
GST_ERROR ("no driver");
return NULL;
}
i = 0;
ret = iterator->Next (&decklink);
while (ret == S_OK) {
ret = decklink->QueryInterface (IID_IDeckLinkInput,
(void **) &devices[i].input.input);
if (ret != S_OK) {
GST_WARNING ("selected device does not have input interface");
} else {
devices[i].input.device = decklink;
devices[i].input.clock = gst_decklink_clock_new ("GstDecklinkInputClock");
GST_DECKLINK_CLOCK_CAST (devices[i].input.clock)->input =
&devices[i].input;
devices[i].input.
input->SetCallback (new GStreamerDecklinkInputCallback (&devices[i].
input));
}
ret = decklink->QueryInterface (IID_IDeckLinkOutput,
(void **) &devices[i].output.output);
if (ret != S_OK) {
GST_WARNING ("selected device does not have output interface");
} else {
devices[i].output.device = decklink;
devices[i].output.clock =
gst_decklink_clock_new ("GstDecklinkOutputClock");
GST_DECKLINK_CLOCK_CAST (devices[i].output.clock)->output =
&devices[i].output;
}
ret = decklink->QueryInterface (IID_IDeckLinkConfiguration,
(void **) &devices[i].input.config);
if (ret != S_OK) {
GST_WARNING ("selected device does not have config interface");
}
ret = decklink->QueryInterface (IID_IDeckLinkAttributes,
(void **) &devices[i].input.attributes);
if (ret != S_OK) {
GST_WARNING ("selected device does not have attributes interface");
}
ret = iterator->Next (&decklink);
i++;
if (i == 10) {
GST_WARNING ("this hardware has more then 10 devices");
break;
}
}
n_devices = i;
iterator->Release ();
return NULL;
}
GstDecklinkOutput *
gst_decklink_acquire_nth_output (gint n, GstElement * sink, gboolean is_audio)
{
GstDecklinkOutput *output;
g_once (&devices_once, init_devices, NULL);
if (n >= n_devices)
return NULL;
output = &devices[n].output;
if (!output->output) {
GST_ERROR ("Device %d has no output", n);
return NULL;
}
g_mutex_lock (&output->lock);
if (is_audio && !output->audiosink) {
output->audiosink = GST_ELEMENT_CAST (gst_object_ref (sink));
g_mutex_unlock (&output->lock);
return output;
} else if (!output->videosink) {
output->videosink = GST_ELEMENT_CAST (gst_object_ref (sink));
g_mutex_unlock (&output->lock);
return output;
}
g_mutex_unlock (&output->lock);
GST_ERROR ("Output device %d (audio: %d) in use already", n, is_audio);
return NULL;
}
void
gst_decklink_release_nth_output (gint n, GstElement * sink, gboolean is_audio)
{
GstDecklinkOutput *output;
if (n >= n_devices)
return;
output = &devices[n].output;
g_assert (output->output);
g_mutex_lock (&output->lock);
if (is_audio) {
g_assert (output->audiosink == sink);
gst_object_unref (sink);
output->audiosink = NULL;
} else {
g_assert (output->videosink == sink);
gst_object_unref (sink);
output->videosink = NULL;
}
g_mutex_unlock (&output->lock);
}
void
gst_decklink_output_set_audio_clock (GstDecklinkOutput * output,
GstClock * clock)
{
g_mutex_lock (&output->lock);
if (output->audio_clock)
gst_object_unref (output->audio_clock);
output->audio_clock = clock;
if (clock)
gst_object_ref (clock);
g_mutex_unlock (&output->lock);
}
GstClock *
gst_decklink_output_get_audio_clock (GstDecklinkOutput * output)
{
GstClock *ret = NULL;
g_mutex_lock (&output->lock);
if (output->audio_clock)
ret = GST_CLOCK_CAST (gst_object_ref (output->audio_clock));
g_mutex_unlock (&output->lock);
return ret;
}
GstDecklinkInput *
gst_decklink_acquire_nth_input (gint n, GstElement * src, gboolean is_audio)
{
GstDecklinkInput *input;
g_once (&devices_once, init_devices, NULL);
if (n >= n_devices)
return NULL;
input = &devices[n].input;
if (!input->input) {
GST_ERROR ("Device %d has no input", n);
return NULL;
}
g_mutex_lock (&input->lock);
if (is_audio && !input->audiosrc) {
input->audiosrc = GST_ELEMENT_CAST (gst_object_ref (src));
g_mutex_unlock (&input->lock);
return input;
} else if (!input->videosrc) {
input->videosrc = GST_ELEMENT_CAST (gst_object_ref (src));
g_mutex_unlock (&input->lock);
return input;
}
g_mutex_unlock (&input->lock);
GST_ERROR ("Input device %d (audio: %d) in use already", n, is_audio);
return NULL;
}
void
gst_decklink_release_nth_input (gint n, GstElement * src, gboolean is_audio)
{
GstDecklinkInput *input;
if (n >= n_devices)
return;
input = &devices[n].input;
g_assert (input->input);
g_mutex_lock (&input->lock);
if (is_audio) {
g_assert (input->audiosrc == src);
gst_object_unref (src);
input->audiosrc = NULL;
} else {
g_assert (input->videosrc == src);
gst_object_unref (src);
input->videosrc = NULL;
}
g_mutex_unlock (&input->lock);
}
G_DEFINE_TYPE (GstDecklinkClock, gst_decklink_clock, GST_TYPE_SYSTEM_CLOCK);
static GstClockTime gst_decklink_clock_get_internal_time (GstClock * clock);
static void
gst_decklink_clock_class_init (GstDecklinkClockClass * klass)
{
GstClockClass *clock_class = (GstClockClass *) klass;
clock_class->get_internal_time = gst_decklink_clock_get_internal_time;
}
static void
gst_decklink_clock_init (GstDecklinkClock * clock)
{
GST_OBJECT_FLAG_SET (clock, GST_CLOCK_FLAG_CAN_SET_MASTER);
}
static GstClock *
gst_decklink_clock_new (const gchar * name)
{
GstDecklinkClock *self =
GST_DECKLINK_CLOCK (g_object_new (GST_TYPE_DECKLINK_CLOCK, "name", name,
"clock-type", GST_CLOCK_TYPE_OTHER, NULL));
return GST_CLOCK_CAST (self);
}
static GstClockTime
gst_decklink_clock_get_internal_time (GstClock * clock)
{
GstDecklinkClock *self = GST_DECKLINK_CLOCK (clock);
GstClockTime result, start_time, last_time;
GstClockTimeDiff offset;
BMDTimeValue time;
HRESULT ret;
if (self->input != NULL) {
g_mutex_lock (&self->input->lock);
start_time = self->input->clock_start_time;
offset = self->input->clock_offset;
last_time = self->input->clock_last_time;
time = -1;
if (!self->input->started) {
result = last_time;
ret = -1;
} else {
ret =
self->input->input->GetHardwareReferenceClock (GST_SECOND, &time,
NULL, NULL);
if (ret == S_OK && time >= 0) {
result = time;
if (start_time == GST_CLOCK_TIME_NONE)
start_time = self->input->clock_start_time = result;
if (result > start_time)
result -= start_time;
else
result = 0;
if (self->input->clock_restart) {
self->input->clock_offset = result - last_time;
offset = self->input->clock_offset;
self->input->clock_restart = FALSE;
}
result = MAX (last_time, result);
result -= offset;
result = MAX (last_time, result);
} else {
result = last_time;
}
self->input->clock_last_time = result;
}
g_mutex_unlock (&self->input->lock);
} else if (self->output != NULL) {
g_mutex_lock (&self->output->lock);
start_time = self->output->clock_start_time;
offset = self->output->clock_offset;
last_time = self->output->clock_last_time;
time = -1;
if (!self->output->started) {
result = last_time;
ret = -1;
} else {
ret =
self->output->output->GetHardwareReferenceClock (GST_SECOND, &time,
NULL, NULL);
if (ret == S_OK && time >= 0) {
result = time;
if (start_time == GST_CLOCK_TIME_NONE)
start_time = self->output->clock_start_time = result;
if (result > start_time)
result -= start_time;
else
result = 0;
if (self->output->clock_restart) {
self->output->clock_offset = result - last_time;
offset = self->output->clock_offset;
self->output->clock_restart = FALSE;
}
result = MAX (last_time, result);
result -= offset;
result = MAX (last_time, result);
} else {
result = last_time;
}
self->output->clock_last_time = result;
}
g_mutex_unlock (&self->output->lock);
} else {
g_assert_not_reached ();
}
GST_LOG_OBJECT (clock,
"result %" GST_TIME_FORMAT " time %" GST_TIME_FORMAT " last time %"
GST_TIME_FORMAT " offset %" GST_TIME_FORMAT " start time %"
GST_TIME_FORMAT " (ret: 0x%08x)", GST_TIME_ARGS (result),
GST_TIME_ARGS (time), GST_TIME_ARGS (last_time), GST_TIME_ARGS (offset),
GST_TIME_ARGS (start_time), ret);
return result;
}
static gboolean
plugin_init (GstPlugin * plugin)
{
GST_DEBUG_CATEGORY_INIT (gst_decklink_debug, "decklink", 0,
"debug category for decklink plugin");
gst_element_register (plugin, "decklinkaudiosink", GST_RANK_NONE,
GST_TYPE_DECKLINK_AUDIO_SINK);
gst_element_register (plugin, "decklinkvideosink", GST_RANK_NONE,
GST_TYPE_DECKLINK_VIDEO_SINK);
gst_element_register (plugin, "decklinkaudiosrc", GST_RANK_NONE,
GST_TYPE_DECKLINK_AUDIO_SRC);
gst_element_register (plugin, "decklinkvideosrc", GST_RANK_NONE,
GST_TYPE_DECKLINK_VIDEO_SRC);
return TRUE;
}
GST_PLUGIN_DEFINE (GST_VERSION_MAJOR,
GST_VERSION_MINOR,
decklink,
"Blackmagic Decklink plugin",
plugin_init, VERSION, "LGPL", PACKAGE_NAME, GST_PACKAGE_ORIGIN)
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